CN102814333B - The three-roll pipe mill frame that a kind of tilt bed is opened - Google Patents
The three-roll pipe mill frame that a kind of tilt bed is opened Download PDFInfo
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- CN102814333B CN102814333B CN201210320114.5A CN201210320114A CN102814333B CN 102814333 B CN102814333 B CN 102814333B CN 201210320114 A CN201210320114 A CN 201210320114A CN 102814333 B CN102814333 B CN 102814333B
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Abstract
The invention provides the three-roll pipe mill frame that a kind of tilt bed is opened, comprise lower bearing bracket and upper cover, described upper cover has right side and the left side of inclination, under the driving of hydraulic cylinder, be fixed on the bearing pin of described lower bearing bracket for axle center pivotable with one, and relatively described lower bearing bracket is opened or closed; It also comprises: be positioned at the linkage outside the bearing pin side of described lower bearing bracket, described linkage is connected with described upper cover pivotable, the cylinder body of described hydraulic cylinder is connected with the bearing pin side pivotable of described frame, and the piston rod of described hydraulic cylinder is connected with described linkage pivotable.Compared with prior art, adopt linkage to carry out folding upper cover in outside, linkage is placed on the side of pipe mill, avoids frame central area, can facilitate the tapping of pipe mill, the cost of manufacture of objective reduction rolled piece in the present invention.
Description
Technical field
The present invention relates to roll seamless steel tube, the three-roll pipe mill frame that the tilt bed particularly in seamless steel tube production technique is opened.
Background technology
Fig. 1 is publication number is the structural representation that CN101745539A name is called " a kind of device for opening of machine cover of tube rolling mill " Chinese invention patent, and the frame of the device for opening of this machine cover of tube rolling mill comprises lower bearing bracket 1, upper cover 2, base 5, hydraulic cylinder 9 and support hydraulic cylinder 8.Wherein, lower bearing bracket 1 is agent structure, and upper cover 2 is fastened on lower bearing bracket 1 opening or closing.After upper cover 2 is fastened on lower bearing bracket 1, three roll fixing hole A, B, C be communicated with centered by the center O of institute's tube rolling line are defined in the middle of the two, three roll fixing holes A, B, C are that angle, 120 degree, interval is arranged, the fixing hole A of top is arranged in upper cover 2, box body 22 is arranged in the upper cover 2 on the fixing hole A top of top, and inside and outside box body 22, the face of both sides is perpendicular to the length direction of the fixing hole A of top.Below fixing hole B, C then open terrain be formed in lower bearing bracket 1 top, two box bodies 11 are arranged at fixing hole B, C top of below respectively, lay respectively at two side roof parts of lower bearing bracket 1, inside and outside box body 11, the face of both sides is respectively perpendicular to the length direction of fixing hole B, C of below.So, the center O of three planar alignment institute tube rolling lines each other between roll fixing hole A, B, C of 120 degree and the box body 11,22 at top, to install depress spiro rod to adjust roll.
Lower bearing bracket 1 comprises the support member 13 of two steel plates 10 parallel and spaced apart from each other, the box body 11 be arranged symmetrically with and side.Two steel plates 10 are connected as a single entity by the multiple welding structural elements therebetween perpendicular to steel plate 10.Two steel plate 10 top edges are W shape, and two box bodies 11 are welded in two side roof parts that edge is two steel plates 10 of W shape respectively, and edge is roll fixing hole B, C that two steel plates 10 of W shape and two box bodies 11 of two side roof parts thereof surround lower bearing bracket.Two box body 11 end faces all have the stationary plane of level, with the locking upper cover 2 that aligns.Respectively weld a supporting member 13 in the both sides of the box body 11 of lower bearing bracket 1 side, supporting member 13 is provided with axis hole 131 to be fixed for the bearing pin 21 of pivot joint upper cover 2.The bottom of lower bearing bracket 1 is the base 5 at two intervals, installs fixing lower bearing bracket 1 by base 5.
Upper cover 2 is the overall box body in inverted V-shaped, and box body 22, two v-shaped plate 20 comprising two v-shaped plates 20 parallel and spaced apart from each other and be embedded at v-shaped plate 20 top middle portion is connected as a single entity by the multiple welding structural elements therebetween perpendicular to steel plate 20.And the both sides bottom upper cover 2 are embedded with two box-shaped fixtures 23, fixture 23 aligns the stationary plane of lower bearing bracket 1 two box body 11 end faces, and the location structure between both fixture 23 and box body 11 can be utilized accurately to locate upper cover 2 and lower bearing bracket 1.The lower end of each steel plate 20 1 sides of upper cover 2 is provided with pivot hole 25, is connected with the pivotable of lower bearing bracket 1 by bearing pin 21 and supporting member 13 whereby, when upper cover 2 is opened or is closed with bearing pin 21 for swivel point.Upper cover 2 is provided with a stressed member 24 at the upper position of corresponding bearing pin 21 side, and after upper cover 2 is opened, stressed member 24 can support upper cover 2 by bottom part support.
As shown in Figure 1, both sides in the middle part of lower bearing bracket 1 install the hydraulic cylinder 9 of a middle trunnion type respectively, the cylinder body pivotable of hydraulic cylinder 9 is connected on lower bearing bracket 1, the piston rod top gudgeon 92 of hydraulic cylinder 9 is hinged on upper cover 2, because pipe mill center O has axial institute's tube rolling line, for avoiding hydraulic cylinder 9 in motion to interfere institute's tube rolling line, so hydraulic cylinder 9 will be fixed on the side near bearing pin 21 as far as possible.Meanwhile, on the downside of the stressed member 24 after upper cover 2 is opened, be also provided with a support hydraulic cylinder 8, its upper cover 2 near position time support stressed member 24 to hold upper cover 2, and upwards boost upper cover 2 when closing.
In this Conventional carriers, device for opening is the hydraulic cylinder 9 of frame both sides, and because upper cover 2 is tumbled, to start force requirements in process very large, and hydraulic cylinder 9 will be fixed on as far as possible near the side of bearing pin 21, cause stress point virial arm shorter, the easy stress deformation in upper cover 2 coupling part.When upper cover 2 is tumbled in addition, its center of gravity swings to opposite side, upper cover 2 can in larger angle (close to 90 degree) movement fast, the driving velocity of hydraulic cylinder 9 piston rod can be exceeded, the force way meeting flip-flop of cylinder pressure liquid in hydraulic cylinder 9, hydraulic cylinder 9 is made to be converted to negative pressure very soon by malleation, damaging hydraulic oil pump or the control piece of hydraulic cylinder 9 possibly, there is unsafe factor in operating process.
Summary of the invention
For solving the technical problem that prior art exists, the object of the invention is that providing one to be arranged on frame side avoids center tube rolling line, and the three-roll pipe mill frame that the tilt bed of energy safeguard work efficiency is opened.
Secondary objective of the present invention is to provide one need not establish power set holder again, the three-roll pipe mill frame that the tilt bed can also offsetting the out-of-balance force produced in overturning of machine frame process is opened.
A kind of the making that be to provide of syllabus again of the present invention lengthens at the application point arm of force of upper cover, to improve frame force-bearing situation, and the three-roll pipe mill frame that avoid active force to cross tilt bed that ambassador's top cap connects part stress deformation is opened.
Another secondary objective of the present invention is to provide a kind of active force demand can better catered in upper cover opening and closing process, the three-roll pipe mill frame that the tilt bed of greatly increasing work efficiency is opened.
For achieving the above object, technical scheme of the present invention is as follows:
The three-roll pipe mill frame that a kind of tilt bed is opened, comprise lower bearing bracket and upper cover, described upper cover has right side and the left side of inclination, under the driving of hydraulic cylinder, be fixed on the bearing pin of described lower bearing bracket for axle center pivotable with one, and relatively described lower bearing bracket is opened or closed; It also comprises: be positioned at the linkage outside the bearing pin side of described lower bearing bracket, described linkage is connected with described upper cover pivotable, the cylinder body of described hydraulic cylinder is connected with the bearing pin side pivotable of described frame, and the piston rod of described hydraulic cylinder is connected with described linkage pivotable.
Beneficial effect of the present invention is, the present invention compared with prior art, adopts linkage to carry out folding upper cover in outside, linkage is placed on the side of pipe mill, avoid frame central area, the tapping of pipe mill can be facilitated, the cost of manufacture of objective reduction rolled piece.
According to above-mentioned design, described linkage comprises: rocking bar, pull bar and bearing; Described bearing is anchored in the ground of described lower bearing bracket side, linkage described in bottom support; The described rocking bar of stock shape is the driving lever in linkage, the pivot portion, top that its top is pull bar one end described in pivot joint, and bottom is the pivot portion, the end of pivot joint bearing; The described pull bar other end of stock shape is articulated in the top of described upper cover; Rocking bar described in described Driven by Hydraulic Cylinder swings around pivot joint axle center, bottom, and described rocking bar swaying direction is consistent with described upper cover rotating open-close direction.So, safeguard work efficiency that can be best, avoids the generation of idle work side force as far as possible, and the lower pair connection of connecting rod form can reduce cost and loss.
According to above-mentioned design, the side on described lower bearing bracket top is welded with the supporting member of fixing described bearing pin; Described hydraulic cylinder is a hydraulic lifting cylinder, described in the cylinder front end that hoists be piston rod gudgeon rear end be cylinder trunnion, described piston rod gudgeon is pivoted on the top of described rocking bar, and described cylinder trunnion is pivoted on described lower bearing bracket supporting member.Like this, with the cylinder that hoists to the thrust of pivot part or pulling force, just can offset the thrust of two kinds of angles when upper cover is opened or closed, one is the Special fixing reservation need not establishing the cylinder that hoists again; Two are, the counteracting of stress also can avoid displacement or the distortion of frame.
According to above-mentioned design, also have one in order to support the supporting seat opening rear described upper cover, described supporting seat is that between described frame and described bearing is welded and fixed seat.Accurately to support the upper cover after upset.
According to above-mentioned design, top, described upper cover right side is fixed with a connector, described pull bar and described upper cover by this connector pivot joint, the pivot joint axle center of described connector at the height of described upper cover higher than the half of upper cover height.The height of the drive-connecting shaft of pull bar and upper cover higher than the half of upper cover height, thus enables the application point arm of force pulling upper cover lengthen, and improves the force-bearing situation of frame, avoids thrust to cross ambassador's top cap and connect part stress deformation.
According to above-mentioned design, after described upper cover 90-degree rotation is opened, to be reached home position by start bit in described pull bar and upper cover pivot joint axle center, described start bit is just opening and closing direction to the straight line of terminal position; The cylinder effect that hoists described in described rocking bar is subject to swings, the pivotable axle center of its pivot portion, top and pull bar forced section is rocked to low level by a high position, straight line between a described high position to low level is just described rocking bar swaying direction, and described swaying direction is within the scope of positive and negative 15 degree of described opening and closing direction.Best operating efficiency can be had to carry out adjustment in this angular range.
According to above-mentioned design, the angle of described swaying direction relative level line is greater than described opening and closing direction 3 to 10 degree.Upper cover is in rotation starting bit, the mainly side direction horizontal pulling force needed when opening, after 90-degree rotation to terminal position, when needing to return closedown, main it is desirable that thrust vertically upward, the present invention is greater than upper cover opening and closing direction 3 to 10 degree with the angle of rocking bar swaying direction relative level line, namely a high position for rocking bar is upwards raised, make the angle of pull bar closer to horizontal line, relatively can improve rocking bar in starting bit to the side direction horizontal pulling force of upper cover, be opened to terminal position in upper cover swing simultaneously, when rocking bar arrives low level, the angle of pull bar is then closer to vertical line, the normal thrust of cylinder upper cover upward of now hoisting also can be larger, so, the active force demand in upper cover opening and closing process can better be catered to, greatly increase work efficiency, dead point can also be avoided simultaneously.
According to above-mentioned design, described upper cover comprises two steel plates parallel and spaced apart from each other, respectively with two groups of identical linkage parallel actions in described two steel plates.The balance of upper cover switching process is ensured with this.
According to above-mentioned design, the horizontal two-layered steel plates being connected to described upper cover of described connector, described connector comprises two articulated sections and a main body; Described main body is generally L-shaped, comprises the stiff end extended inside described steel plate and the abutment end extended vertically downward, and described stiff end is fixed on described steel plate, is bearing surface outside described abutment end; Described bearing surface both sides are located in two articulated sections, described two articulated sections respectively with the pull bar pivot joint of described two groups of linkages.After upper cover rotarily opens, just can be against on the end face of supporting seat, what namely ensure that upper cover steel plate is subject to force intensity, and meanwhile, bearing surface can also avoid upper cover to be supported rear distortion.
According to above-mentioned design, at described upper cover buckling state, described rocking bar perpendicular to horizontal line, and described in hoist cylinder perpendicular to rocking bar, the height of described rocking bar is equal to or less than the bearing pin height on described pivot part.The calibration of this kind of situation ease of assembly, and can also best operational paradigm.
According to above-mentioned design, described supporting seat leaves for described in hoist the breach that cylinder and pull bar pass through, and locate described pull bar with described breach.Better locate hoist cylinder and pull bar with this, prevent the stability that pull bar influence of crust deformation upper cover overturns.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation opening frame of existing tilt bed upper cover;
Fig. 2 is the three-roll pipe mill rack construction schematic diagram that tilt bed of the present invention is opened;
Fig. 3 is the principle schematic that linkage of the present invention drives upper cover upset;
The schematic top plan view of the three-roll pipe mill rack construction that Fig. 4 opens for tilt bed shown in Fig. 2;
Fig. 5 is the structural representation of upper cover part of the present invention;
Fig. 6 is the schematic perspective view of top cap connector part.
Wherein, description of reference numerals is as follows: 1 lower bearing bracket, 10 steel plates, 11 box bodies, 13 supporting members, 131 axis holes, 132 lower shaft holes, 2 upper covers, 20 steel plates, 201 right sides, 202 left sides, 21 bearing pins, 22 box bodies, 23 fixtures, 24 stressed members, 25 pivot hole, 26 connectors, 261 articulated sections, 262 main bodys, 2621 stiff ends, 2622 abutment ends, 2623 bearing surfaces, 3 linkages, 31 rocking bars, 311 pivot portion, tops, 312 pivot portion, the ends, 313 stressed lugs, 32 pull bars, 321 forced sections, 322 force sections, 33 bearings, 331 lugs, 34 hoist cylinder, 341 piston rod gudgeons, 342 cylinder trunnion, 4 supporting seats, 5 bases, 8 support hydraulic cylinders, 9 hydraulic cylinders, 91 cylinder bodies, 92 top gudgeons, A, B, C roll fixing hole, O center, D line, E1 start bit, E2 terminal position, E3 is high-order, E4 low level, F1 opening and closing direction, F2 swaying direction, G axle height, H upper cover height, β oblique angle, the θ angle of depression.
Detailed description of the invention
The exemplary embodiments embodying feature & benefits of the present invention will describe in detail in the following description.Be understood that the present invention can have various changes in different embodiments, it neither departs from the scope of the present invention, and explanation wherein and to be shown in be use when explain in essence, and be not used to limit the present invention.
As shown in Figure 2, the three-roll pipe mill frame that tilt bed of the present invention is opened comprises lower bearing bracket 1, upper cover 2 and base 5 equally.Wherein, lower bearing bracket 1 is agent structure, and upper cover 2 is fastened on (introduction of rack section concrete structure visible background technology part, does not repeat them here) on lower bearing bracket 1 opening or closing.The supporting member 13 of lower bearing bracket 1 side except the axis hole 131 comprising fixed pin shaft 21, and sets up one group of lower shaft hole 132 in the downside of axis hole 131.The upper cover 2 of inverted V-shaped has right side 201 and the left side 202 of inclination, and upper cover 2 is articulated in the bearing pin 21 on supporting member 13 with the pivot hole 25 below right side 201, and upper cover 2 to rotarily open for axle center with bearing pin 21 or closes.Opening mechanism provided by the invention comprises linkage 3 and supporting seat 4, and linkage 3 realizes the opening and closing of tumbling of upper cover 2, Fig. 2 chain lines part represent linkage 3 make upper cover 2 tumble from the side after situation; Supporting seat 4 is in order to support the upper cover 2 after opening.
As shown in Figure 2 and Figure 3, linkage 3 is arranged at outside the side of frame bearing pin 21, comprising: rocking bar 31, pull bar 32, bearing 33 and the cylinder 34 that hoists.As shown in Figure 4, because the steel plate 20 of upper cover 2 by two intervals forms, so in order to stress balance, in the present embodiment, respectively with two groups of identical linkage 3 parallel actions in two steel plates 20 of upper cover 2, certainly, if when frame is lighter, also only can exert a force between two steel plates 20 with one group of linkage 3, or also can carry out the flexible integration of single or two the forms of each parts.
Below the specific embodiment structure of single group linkage 3 is introduced: as shown in Figure 2, bearing 33 is anchored in the ground outside frame right side, in order at bottom support linkage 3, bearing 33 end face has the lug 331 with rocking bar 31 pivot joint, lug 331 can be the U-shaped lug of monolithic lug or biplate, and bearing 33 can determine according to the length of the cylinder 34 that hoists be assemblied between the two and setting angle apart from the horizontal range of the supporting member 13 of lower bearing bracket 1 side.
As shown in Figure 2, rocking bar 31 is long pole, it is the driving lever in linkage 3, top has for the pivot portion, top 311 with pull bar 32 pivot joint, bottom is the pivot portion, the end 312 of pivot joint bearing 33 lug 331, rocking bar 31 face down frame 1 side near tip position be provided with one with the lug 313 of cylinder 34 pivot joint that hoists.As shown in Figure 3, pull in upper cover 2 switching process, rocking bar 31 hoisted cylinder 34 effect swing, its pivot portion, top 311 is rocked to low level E4 with the pivotable axle center of pull bar 32 forced section 321 by high-order E3, line between high-order E3 and low level E4 is just rocking bar 31 swaying direction F2, and swaying direction F2 is consistent with the swaying direction of upper cover 2.Be the power swung using hydraulic lifting cylinder 34 as rocking bar 31 in swaying direction F2 the present embodiment, certainly, also can replace use according to this area general knowledge with other power set.
The pull bar 32 of stock shape is articulated in the pivot portion, top 311 of rocking bar 31 with the forced section 321 of one end, the force section 322 of pull bar 32 other end is then articulated in the top of upper cover 2 right side 201, in order to the wobbling action of rocking bar 31 is delivered to upper cover 2, with unlatching of being tumbled.The hydraulic cylinder of the cylinder 34 that hoists is front ends to be piston rod gudgeon 341 rear end be cylinder trunnion 342, piston rod gudgeon 341 is pivoted on the lug 313 of rocking bar 31, cylinder trunnion 342 is connected with lower shaft hole 132 pivotable of the supporting member 13 of lower bearing bracket 1, and the pivotal point of the piston rod gudgeon 341 of the cylinder 34 that hoists is nearer better apart from rocking bar 31 and the pivot joint axle center distance of pull bar 32; Certainly, the dead point that the low level E4 of rocking bar 31 finally should not form zero degree with the cylinder 34 that hoists crosses, and realizes opening upper cover 2 or closing by the pantograph drive link mechanism 3 of the cylinder 34 that hoists to facilitate.Rocking bar 31, pull bar 32, the bearing 33 of linkage 3 and cylinder 34 pin-jointed structure each other that hoists in the present invention, optional is that the monolithic pivot ear in axle center coordinates with U-shaped the staggered of pivot ear of biplate in order to pivot, also can be monolithic pivot ear to the cooperation of monolithic pivot ear, also can be two pivot ear and form is connected to connecting rod lower pairs such as two pivot ear cooperations.
Adopt linkage 3 to carry out folding upper cover 2 in outside, linkage 3 is placed on the side of pipe mill, avoids frame central area, and what can facilitate pipe mill goes out pipe, the cost of manufacture of objective reduction rolled piece; And rocking bar 31 swaying direction F2 is consistent with upper cover rotating open-close direction, safeguard work efficiency that can be best, avoids the generation of idle work side force as far as possible.And replace original direct hydraulic cylinder to open the mode of upper cover 2 by hydraulic lifting cylinder 34 drive rocker 31, and the top of rocking bar 31 is pivoted on cylinder 34 one end that hoists, the other end is arranged on the supporting member 13 of lower bearing bracket 1, like this, with the thrust of the cylinder 34 pairs of supporting members 13 that hoist or pulling force, just can offset the out-of-balance force of two kinds of angles when upper cover 2 is opened or closed, one is the Special fixing reservation need not establishing the cylinder 34 that hoists again; Two are, the counteracting of power also can avoid displacement or the distortion of frame.
As Fig. 2, shown in Fig. 5 and Fig. 6, present invention also offers aforementioned link mechanism 3 and form is set the better of pivoting point of upper cover 2, a connector 26 is fixed with on top, upper cover 2 right side 201, connector 26 is horizontal is connected to two steel plates 20, connector 26 comprises articulated section 261 and main body 262, as shown in Figure 6, main body 262 is generally L-shaped, comprise the stiff end 2621 extended inside steel plate 20 and the abutment end 2622 extended vertically downward, stiff end 2621 can first coordinate with steel plate 20 be embedded after be welded in again one, certainly, also can select and be spirally connected, the types of attachment such as riveted joint.Be bearing surface 2623 outside abutment end 2622, bearing surface 2623 both sides are located in two articulated sections 261, two articulated sections 261 can respectively with force section 322 pivot joint of the pull bar 32 of two groups of linkages 3.And when after upper cover 2 Unscrew, the bearing surface 2623 in the middle of two articulated sections 261 just can be against on the end face of supporting seat 4, what both ensure that upper cover 2 steel plate 20 is subject to force intensity, and meanwhile, bearing surface 2623 can also avoid upper cover 2 to be supported rear distortion.In specific embodiment above, give the pivoting point with upper cover 2 using a horizontal strip connector 26 as two groups of linkages 3, can certainly change to and be individually fixed in the form that a steel plate 20 carrys out pivot joint list group linkage 3.
As shown in Figure 5, upper cover of rack 2 right side 201 of pipe mill and left side 202 tilt all to the inside, example shown in figure is that right side 201 and left side 202 have all sloped inwardly 35 degree, making side and horizontal line form angle is 55 degree, for the benefit of pull bar 32 is in side pull-up with push back upper cover 2, to provide the longer arm of force, the horizontal line in pull bar 32 and the pivot joint axle center of upper cover 2 is to the axle height G of pivot hole 25 central horizontal line, goodly be greater than the half of upper cover 2 end face to the upper cover height H of pivot hole 25 central horizontal line, the distance of pivot joint distance of shaft centers rotating shaft 21 is more far beyond good; But because the oscillating stroke installing more upwards pivot joint axle center just can be larger, correspondingly the oscillating stroke of rocking bar 31 also can be larger, therefore, the setting height(from bottom) of concrete connector 26 also Yao Shi installing connecting rods mechanism 3 space and determine.In addition, the above-mentioned connector 26 arranged can make pull bar 32 and the outside level of upper cover 2 pivot joint axle center start bit E1 shift out a segment distance, so start bit E1 to the line D at pivot hole 25 center and the angle oblique angle β of vertical line can be reduced into 23 degree, after upper cover 2 90-degree rotation is opened, reach home an E2 for pull bar 32 and upper cover 2 pivot joint axle center, the line of start bit E1 to terminal position E2 is just opening and closing direction F1, start bit E1 is to the line D at pivot hole 25 center, terminal position E2 to the line D at pivot hole 25 center and the line of start bit E1 to terminal position E2 constitute an isosceles right triangle, release according to above-mentioned relation and geometrical principle, start bit E1 equals oblique angle β to the line of terminal position E2 and the angle theta of vertical line and adds 45 degree, be 68 degree in this example, just line and the horizontal angle that can derive start bit E1 to terminal position E2 are thus 22 degree.
Fig. 3 is the principle schematic that linkage 3 of the present invention drives upper cover 2 to overturn, chain-dotted line part is the position of opening back part, for improving the functioning efficiency of power, rocking bar 31 swaying direction F2 is better consistent with upper cover 2 opening and closing direction F1, namely, the two on the same line or lay respectively on the straight line of angle in ± 22.5 degree, the best is located along the same line; Certainly, because of condition restrictions such as place space constraint or cylinder 34 length specifications that hoists, swaying direction F2 also can adjust ± 15 degree of scopes by opening and closing direction F1 relatively, also can not affect unlatching effect.Also have better a kind of situation, high-order E3 upwards can be raised, namely the angle of swaying direction F2 relative level line be strengthened on F1 basis, opening and closing direction, specifically can increase 3 to 10 degree.Because upper cover 2 is at rotation starting bit E1, the mainly side direction horizontal pulling force needed when opening, at 90-degree rotation to terminal position E2, when needing to return closedown, main it is desirable that thrust vertically upward, the present invention is greater than upper cover 2 opening and closing direction 3 to 10 degree with the angle of rocking bar 31 swaying direction relative level line, namely the high-order E3 of rocking bar 31 is upwards raised, make the angle of pull bar 32 now closer to horizontal line, relatively can improve rocking bar 31 at starting bit E1 to the side direction horizontal pulling force of upper cover 2, simultaneously after upper cover 2 90-degree rotation is opened to terminal position E2, when rocking bar 31 arrives low level E4, the angle of pull bar 32 is then closer to vertical line, now the normal thrust of pull bar 32 pairs of upper covers 2 also can be larger, so, the demand in upper cover 2 opening and closing process can better be catered to, greatly increase work efficiency, dead point can also be avoided at this angular range simultaneously.
In situation as shown in Figure 3, rocking bar 31 in original position just perpendicular to horizontal line, and the cylinder 34 that hoists is perpendicular to rocking bar 31, and for the Altitude control of avoiding dead point rocking bar 31 to push up pivotable axle center, pivot portion 311 is not higher than the height at axis hole 131 center of supporting member 13, substantially be the height that rocking bar 31 length is equal to or less than the axis hole 131 on described supporting member 13 substantially, to provide maximum initial pulling force, after upper cover 2 is opened, hoist cylinder 34 and the angle of rocking bar 31 can be reduced into a less acute angle, is so more conducive to the more high thrust formed obliquely.As shown in Fig. 2 and Fig. 4, supporting seat 4 is that between lower bearing bracket 1 and bearing 33 one is welded and fixed seat, supporting seat 4 is fixedly mounted on basis, its end face just can support the connector 26 opened on rear upper cover 2, when two groups of identical linkages 3 be arranged in parallel, supporting seat 4 is preferably positioned at two spacing hoisting cylinder 34 and two pull bars 32, certainly the breach passed through for hoist cylinder 34 and pull bar 32 also can be reserved on supporting seat 4, and can also with breach or the parts arranging activity orientation pull bar 32 in breach, better hoist cylinder and pull bar is located with this, prevent the stability that pull bar influence of crust deformation upper cover overturns.
Please refer to Fig. 2 and Fig. 3, the frame course of work that upper cover tilt bed of the present invention is opened is as follows: when opening upper cover 2, first starting the cylinder 34 that hoists makes its piston rod stretch out, promote rocking bar 31 and be rocked to low level E4 along swaying direction F2 by high-order E3, simultaneously rocking bar 31 to be reached home an E2 by start bit E1 along opening and closing direction F1 by pull bar 32 interlock upper cover 2, at this moment upper cover 2 with bearing pin 21 for axle center open 90 degree, the bearing surface 2623 of the connector 26 on last upper cover 2 just can be against on the end face of supporting seat 4, completes the unlatching of upper cover 2.Now can easily the roll device in frame be taken out from lower bearing bracket 1 and change.When upper cover 2 is closed, starting the cylinder 34 that hoists makes its piston rod retract, rocking bar 31 is pulled to be rocked to high-order E3 in contrast to swaying direction F2 by low level E4, rocking bar 31 promotes upper cover 2 by pull bar 32 and turns back to start bit E1 in contrast to opening and closing direction F1 by terminal position E2 simultaneously, and at this moment upper cover 2 is axle center rotary closing with bearing pin 21.
In the above-described embodiments, when when upper cover 2 is tumbled, its center of gravity swings to opposite side, though upper cover 2 also can movement fast downwards, but because piston rod gudgeon 341 pivotable of the cylinder 34 that hoists is connected to rocking bar 31 top, the momentum that upper cover 2 now moves down first can oppress pull bar 32 and rocking bar 31, therebetween angle is diminished, laterally drive piston rod gudgeon 341 outside simultaneously, at this moment the downward momentum of upper cover 2 just can reduce by half in the horizontal, and also have the power of half to be born by bearing 33, therefore can not damage hydraulic oil pump or the control piece of lift cylinder 34.
Although with reference to exemplary embodiment describing the present invention, should be appreciated that term used illustrates and exemplary and nonrestrictive term.Spirit or the essence of invention is not departed from because the present invention can specifically implement in a variety of forms, so be to be understood that, above-described embodiment is not limited to any aforesaid details, and explain widely in the spirit and scope that should limit in claim of enclosing, therefore fall into whole change in claim or its equivalent scope and remodeling and all should be claim of enclosing and contained.
Claims (9)
1. the three-roll pipe mill frame opened of a tilt bed, comprise lower bearing bracket and upper cover, described upper cover has right side and the left side of inclination, under the driving of hydraulic cylinder, be fixed on the bearing pin of described lower bearing bracket for axle center pivotable with one, and relatively described lower bearing bracket is opened or closed; It is characterized in that, also comprise:
Be positioned at the linkage outside the bearing pin side of described lower bearing bracket, described linkage is connected with described upper cover pivotable, and the side on described lower bearing bracket top is welded with the supporting member of fixing described bearing pin;
The cylinder body of described hydraulic cylinder is connected with described supporting member pivotable, the piston rod of described hydraulic cylinder is connected with described linkage pivotable, linkage described in described Driven by Hydraulic Cylinder drives in outside described upper cover to open or cuts out, and described linkage comprises: rocking bar, pull bar and bearing; Described bearing is anchored in the ground of described lower bearing bracket side, linkage described in bottom support; The described rocking bar of stock shape is the driving lever in linkage, the pivot portion, top that its top is pull bar one end described in pivot joint, and bottom is the pivot portion, the end of pivot joint bearing; The described pull bar other end of stock shape is articulated in the top of described upper cover; Rocking bar described in described Driven by Hydraulic Cylinder swings around pivot joint axle center, bottom, and described rocking bar swaying direction is consistent with described upper cover rotating open-close direction.
2. the three-roll pipe mill frame opened of tilt bed as claimed in claim 1, it is characterized in that, described hydraulic cylinder is a hydraulic lifting cylinder, the described cylinder front end that hoists is piston rod gudgeon rear end is cylinder trunnion, described piston rod gudgeon is pivoted on the top of described rocking bar, and described cylinder trunnion is pivoted on described lower bearing bracket supporting member.
3. the three-roll pipe mill frame opened of tilt bed as claimed in claim 2, is characterized in that, also have one in order to support open after the supporting seat of described upper cover, described supporting seat is that between described frame and described bearing is welded and fixed seat.
4. the three-roll pipe mill frame opened of tilt bed as claimed in claim 2, it is characterized in that, top, described upper cover right side is fixed with a connector, and described pull bar and described upper cover are by this connector pivot joint, and the height in the pivot joint axle center of described connector is higher than the half of described upper cover height.
5. the three-roll pipe mill frame opened of tilt bed as claimed in claim 4, is characterized in that, after described upper cover 90-degree rotation is opened, to be reached home position by start bit in described pull bar and upper cover pivot joint axle center, described start bit is just opening and closing direction to the straight line of terminal position; The cylinder effect that hoists described in described rocking bar is subject to swings, the pivotable axle center of its pivot portion, top and pull bar forced section is rocked to low level by a high position, straight line between a described high position to low level is just described rocking bar swaying direction, and described swaying direction is within the scope of positive and negative 15 degree of described opening and closing direction.
6. the three-roll pipe mill frame opened of tilt bed as claimed in claim 5, it is characterized in that, the angle of described swaying direction relative level line is greater than described opening and closing direction 3 to 10 degree.
7. the three-roll pipe mill frame opened of tilt bed as claimed in claim 6, it is characterized in that, described upper cover comprises two steel plates parallel and spaced apart from each other, respectively with two groups of identical linkage parallel actions in described two steel plates.
8. the three-roll pipe mill frame opened of tilt bed as claimed in claim 7, it is characterized in that, the horizontal two-layered steel plates being connected to described upper cover of described connector, described connector comprises two articulated sections and a main body; Described main body is generally L-shaped, comprises the stiff end extended inside described steel plate and the abutment end extended vertically downward, and described stiff end is fixed on described steel plate, is bearing surface outside described abutment end; Described bearing surface both sides are located in two articulated sections, described two articulated sections respectively with the pull bar pivot joint of described two groups of linkages.
9. the three-roll pipe mill frame that the tilt bed as described in any one of claim 2 to 8 is opened, it is characterized in that, when described upper cover buckling state, described rocking bar is perpendicular to horizontal line, and described in hoist cylinder perpendicular to rocking bar, the length of described rocking bar is equal to or less than the bearing pin height on described supporting member.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210320114.5A CN102814333B (en) | 2012-08-31 | 2012-08-31 | The three-roll pipe mill frame that a kind of tilt bed is opened |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210320114.5A CN102814333B (en) | 2012-08-31 | 2012-08-31 | The three-roll pipe mill frame that a kind of tilt bed is opened |
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| CN102814333B true CN102814333B (en) | 2015-09-16 |
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| CN201210320114.5A Active CN102814333B (en) | 2012-08-31 | 2012-08-31 | The three-roll pipe mill frame that a kind of tilt bed is opened |
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| CN110243540B (en) * | 2019-06-28 | 2021-11-19 | 中国航发南方工业有限公司 | Rotor is protection casing for dynamic balance test and has its dynamic balance test machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB883059A (en) * | 1958-01-07 | 1961-11-22 | Moeller & Neumann Gmbh | Improvements in rolling mills arranged for the removal of roll housings |
| CN101745539A (en) * | 2009-12-29 | 2010-06-23 | 太原重工股份有限公司 | A kind of device for opening of machine cover of tube rolling mill |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5966908A (en) * | 1982-10-06 | 1984-04-16 | Ishikawajima Harima Heavy Ind Co Ltd | Roll rearranging device in vertical rolling mill |
| JPS60108105A (en) * | 1983-11-16 | 1985-06-13 | Ishikawajima Harima Heavy Ind Co Ltd | Rolling equipment |
| CN102327897A (en) * | 2011-07-26 | 2012-01-25 | 太原通泽重工有限公司 | Tappet centering device for perforating machine |
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2012
- 2012-08-31 CN CN201210320114.5A patent/CN102814333B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB883059A (en) * | 1958-01-07 | 1961-11-22 | Moeller & Neumann Gmbh | Improvements in rolling mills arranged for the removal of roll housings |
| CN101745539A (en) * | 2009-12-29 | 2010-06-23 | 太原重工股份有限公司 | A kind of device for opening of machine cover of tube rolling mill |
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